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Blowouts in hanging wall under conditions when walking roof supports are used and suggestion to prevent blowouts
Roof falls and blowouts occur in unsupported zone between coal face and bar of support; this hazard may be prevented by installation of support with bar extending above slope of coal face.
Blowouts in hanging wall under conditions when walking roof supports are used and suggestion to prevent blowouts
Roof falls and blowouts occur in unsupported zone between coal face and bar of support; this hazard may be prevented by installation of support with bar extending above slope of coal face.
Blowouts in hanging wall under conditions when walking roof supports are used and suggestion to prevent blowouts
Ausbrueche aus dem Hangenden bei schreitendem Ausbau und ein Vorschlag fuer ihre Bekaempfung
Jacobi, O. (author)
Glueckauf ; 99
1963
5 pages
Article (Journal)
German
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